# print("Runoob")
#!/usr/bin/python3

# 注释
'''
多行注释
多行注释
多行注释
多行注释
'''
# print("Hello,Python");

# str = '12345678'

# print(str)
# print(str[0:-1])
# print(str[0])
# print(str[2:5])
# print(str[2:])
# print(str[1:5:2])
# print(str * 2)
# print(str + '你好')

# print('-------------------------')
# print('hello\nrunoob')
# print(r'hello\nrunoob')

# x = 'a'
# y = 'b'
# 换行输出
# print(x)
# print(y)

# print('-----------')
# 不换行输出
# print(x,end=" ")
# print(y,end=" ")
# print()
# if True:
#       print("Answer")
#       print("True")
# else:
#       print("Answer")
#       print("False")

# input("\n\n按下 enter 键后退出。")

# import sys
# print("================Python import mode================")
# print('命令行参数')
# for i in sys.argv:
#       print(i)
# print('\n python 路径为',sys.path)

# from sys import argv,path # 导入特定的成员
# print('===================python from import======================')
# print('path:',path) #因为已经导入path成员，所以此处引用时不需要加sys.path

# a,b,c,d = 20,5.5,True,4+3j
# print(type(a),type(b),type(c),type(d))

a = 111
print(isinstance(a,int));
